Roman Numeral - Letters signifying Numerical Values

Used in ancient Rome and are bit complicated but have been used in mathematics since ages. This online calculator has been developed to convert roman numeral to corresponding numbers.
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Roman Numerals

  • Standard Number =


  • Roman Number =

Roman Number Conversion
  In representation of large numerals, lowercase letters are used. This is not standard practice. Often a bar is placed above a digit to indicate that is 1000 times larger than normal.
Standard NumberRoman Number
1 I
5 V
10 X
50 L
100 C
500 D
1000 M
5000 v
10000 x
50000 l
100000 c
500000 d
1000000 m